salganik.bsky.social - Profile | ThreadSky | a Reddit-style client for Bluesky

Last day at the Norwegian Polar Institute. Thanks for the good memories.

submitted 2 hours ago • 1 comment

Yesterday, you showed Zack's beautiful work to your colleague; today, he no longer works at NOAA. Huge support. We all live in an evolving dystopia.

submitted 6 hours ago • 1 comment

🤗 The Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research has made it to Bluesky! Give it a 'follow': @awiexpedition.bsky.social

submitted 8 days ago • 7 comments

Shocking. It is hard to overestimate the importance of all the wonderful research and observations from NOAA @climate.noaa.gov and other US-based agencies. Huge support to Zack and others who are affected.

submitted 8 days ago • 0 comments

Fate of #Arctic sea ice melt | In a new study led by @madm-ice.bsky.social, we followed the #MOSAiC ice floe and calculated the budget of freshwater sources and sinks from snow and ice melt in summer 2020. Read more: doi.org/10.5194/tc-19-619-2025

submitted 13 days ago • 0 comments

Impressive airborne measurements of ice ridge spacing led by Thomas Krumpen:

submitted 23 days ago • 0 comments

Academic journals may need stricter guidelines for introductions. Broad overviews with ambiguous claims and irrelevant references are way too common. Worse, unjustified citations of colleagues and co-authors further devalue citations, as if they can get less valuable than now.

submitted 34 days ago • 0 comments

If only they could have asked the author. The sea-ice density part is not much better. Half-based on a 1978 study published in Russian and not publicly available.

submitted 38 days ago • 1 comment

The only problem with Fabio's color maps is that they are so beautiful it is hard to choose one.

submitted 41 days ago • 1 comment

Our sea ice and ocean sections of Norwegian Polar Institute on Bluesky:

submitted 45 days ago • 0 comments

Quote from WMO sea ice nomenclature: "Ice ridge concentration: Concentration (aerial coverage) of hummocked ice of all kinds in an ice area in tenths." Should it be areal instead of aerial? @wmo-global.bsky.social, we can do better.

submitted 45 days ago • 0 comments

A great new study led by Thomas Krumpen about the decrease of ridge density based on airborne observations since the 1990s:

submitted 52 days ago • 0 comments

Presenting our work on sea-ice ridge thermodynamics during winter and summer at @agu.org was a pleasure. You can check out our #AGU24 talk here: www.youtube.com/watch?v=gUFi...

submitted 73 days ago • 0 comments

Our work with Odile Crabeck and Jack Landy about the rapid decrease of sea-ice density in summer leading to non-decreasing ice freeboard during 0.6 m ice thickness loss: doi.org/10.5194/egus...

submitted 171 days ago • 0 comments

The ecosystem work overview of the MOSAiC expedition led by Allison Fong is published at Elementa: Science of the Anthropocene: doi.org/10.1525/elem...

submitted 190 days ago • 0 comments

Great start of the MOSAiC conference in Potsdam with the team ocean work overview by @clnhz.bsky.social

submitted 368 days ago • 0 comments

Sea ice cores from the MOSAiC expedition were finally CT-scanned at the European Synchrotron in Grenoble at their natural temperatures when they were collected during the 2019–20 season: www.esrf.fr/home/news/ge...

submitted 392 days ago • 0 comments

First morning at European Synchrotron before scanning some MOSAiC sea ice with Sönke Maus from NTNU and Martin Schneebeli from @slfdavos.bsky.social

submitted 403 days ago • 0 comments

Norwegian universities announced their tuition fees for non-EU students. The NTNU annual fee is €43,000 for medicine and €22,500 for technology. It is too high and not supported by educational quality or rankings. Which would mean there will be no non-EU students in Norway.

submitted 440 days ago • 0 comments

If thicker ice melts faster, does it apply to pressure ridges? Ridge flanks also show a good 60% correlation between melt and draft. But for the ridge bottom part, the correlation is much weaker (only 20%), as its melt also depends on ridge width and slope.

submitted 442 days ago • 0 comments

Imagine our profession was built so that you could advance your career without moving all the time. Isn't this a huge piece of the equity and access problem? Yes, it is.

submitted 444 days ago • 26 comments

How often have you heard that thinner ice melts faster? Our measurements of ice melt from the Alfred Wegener Institute ROV underwater sonar show that it is quite the opposite, with a 45% correlation between first-year ice melt and its initial draft:

submitted 444 days ago • 0 comments

One of my guilty pleasures is updating Wikipedia about my favorite topics. I like imperfect Wiki for being neutral by design, written by hundreds of authors with diverse worldviews, and looking like scientific papers, as everything should be referenced. This is from the page about false bottoms:

submitted 448 days ago • 0 comments

When sea ice melts, even after snow is gone, it looks like snow because of the meltwater drainage. In the new study by @madm-ice.bsky.social et al., they describe the albedo of this "surface scattering layer", how fast it can form from bare ice, and how it affects ice melt: doi.org/10.1029/2022...

submitted 461 days ago • 0 comments

Arctic sea ice drifts around twice as fast during the summer (Olason and Notz, 2014). Its drift speed correlates with ice thickness at high ice concentrations. But during the summer, ice also loses its roughness as thicker ice melts faster (color map is from @fabiocrameri.ch):

submitted 462 days ago • 1 comment

A single number is not enough to understand ridge melt enhancement. Some of our ridge cross-sections melted by only 0.2 m, while others by 2.6 m. So we also showed key characteristics defining ridge melt. Deeper, narrower, and steeper ridges melt faster. The largest melt occurs at the ridge corners.

submitted 464 days ago • 0 comments

Our new @eurogeosciences.bsky.social Cryosphere study shows strong differences in melt rates of the main sea-ice types using multibeam sonar surveys during the MOSAiC expedition, with a substantial enhancement of ridge melt: doi.org/10.5194/tc-1...

submitted 464 days ago • 0 comments

We compared Fram Strait sea-ice ridge shapes from ROV sonar with moored sonar measurements from Ekeberg et al. (2014). On average, we had a two-times wider bottom ridge width, covering 38% of the total width, yet 10% of cross-sections were absolutely not trapezoidal:

submitted 482 days ago • 0 comments

Sea-ice ridges are often thought of as lines with trapezoidal cross-sections but in 3D they look quite more complex:

submitted 482 days ago • 0 comments